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Segment Information - Net Sales by Geographic Location (Detail) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Mar. 31, 2015
Mar. 31, 2014
Schedule of Segmentinformation Details Net Salesby Geographic Location [Line Items]    
Net sales $ 16,200us-gaap_Revenues $ 3,613us-gaap_Revenues
UNITED STATES    
Schedule of Segmentinformation Details Net Salesby Geographic Location [Line Items]    
Net sales 399us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= country_US		 3,613us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= country_US
GREECE    
Schedule of Segmentinformation Details Net Salesby Geographic Location [Line Items]    
Net sales 1,490us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= country_GR		  
ITALY    
Schedule of Segmentinformation Details Net Salesby Geographic Location [Line Items]    
Net sales 194us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= country_IT		  
JAPAN    
Schedule of Segmentinformation Details Net Salesby Geographic Location [Line Items]    
Net sales 24us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= country_JP		  
CHINA    
Schedule of Segmentinformation Details Net Salesby Geographic Location [Line Items]    
Net sales $ 14,093us-gaap_Revenues
/ us-gaap_StatementGeographicalAxis
= country_CN